Well pumping apparatus



R. PLOTTs 1,842,685

jan. 26, i932.

WELL PUMPING APPARATUs Filed opt. 1i, 1929 s sheets-sheet 1 EELL.

ATTORNEYS.

Jan. 26, 1932. R. PLoTTs,

WELL PUMPING APPARATUS Filed Oct. ll, 1929 3 Sheets-Sheet 2 |NvENToR. Ru'lnd Plans ATTORNEYS.

Jan. 26, 1932. R, PLQTTS 1,842,685

WELL PUMPING APPARATUS Filed OC't. l1, 1929 3 Sheets-Sheet 3 JZ ffafd INVV NTOR. R Eiland lnIS vATTORNEYS.

nrne'tiee in connection with `eeininiem tor oii Weite to incerte or connection upon n, post or Arent eonneetion where tire nose ottioioiing tine puii rod in disconnected troni the oreier to support tire pumping rooer retention in the weit in en e l ooition., lit is eine eonventionoi fe e, eerie@ 'or picto-up iiooire on eueir ue portiere oir' eooperotinvr with ed tire puit rod to ture up ne9 otter, soy time reperirbre i in tire jruii roti is the nur pone et tinte invention to provide o surety eem@iin@l oonneetion between portions or o unit roet or `oetrreen o puit roti onoi its power ti "fonw und to proririe o. safety de etion tor nseoeietion with auch ing rrhieii Witt eneiote rst, tite .neient disconnection oit the puit Jne non/er tine to inetd tire onnipinooerotire during en otherwise opernnon oit the power tine; eeeonoi, per: im init eitieient teirenp ot' einen in time puit or tine Iiter repoiring oi u brent; ww n., rr eireriieney anni setety to oper i to permit ot7 tine ettielent eonpiing iinir in the puit ooe nerrnittinie,P tire tower oratory pumping string to ire the Weit entit- 'innetioning ot tire ne suine tios oeeorne ire tirer-:enit eonggiit n tire ort9 enti tiene oit troni tire Weit., noirontogee or? this inthe verlernt een tire roei in to tie conu ent rinrine' tire eonrse otn iigure i is at siete eierution et perte ot the improved device? Showing more portie nioriy the connections in e, nil roet or tine endl the ussoeiotion therewith et rietent nieehonisrn.

Figure 2 is u fragmentary pien tiert et the etetails of Figure i.

Figure 3 is o trugrnentuw 'View off the fieteiie of Figure l showing now tire rietent mechanism is brought `into operotire con neetion with u pull iine,|und more particu inriy with o conpiing tink in the tutt/er in event it is decided toeeeornpiish engr ont tire obere outlined objects et this invention.,

Figure ft is en enlergeri View, partir in sec tt tion, showing' the eooperttive construction and association ot the detenta rnemiier o't" the rietent construction, which correspondre to time conventional relielink., with en eniurgernent or o part et the coupiing iinlr or membery mt rrhieh oriiinurily corresponds to e disconnecting iiooir of conventionei construction; the

rietent member being bron tit into sneti opere-1 tion for the purpose et e acting e etiseonneo tion or the power tine -troni the pull reci tor reason to be hereinafter mentioned.

Jiigg'ure 5 is e fragmentary View et etoiixr shown in Figure 3, but in the more progres-- sive osition.

Figure 6 is e irngmentery eierution ot do @t toits ot Figure 5 in n 'further progreseire sition, showing disconnection oi the puit tine und pumping string troni porter siete ot tiro tine.

Figure 7 is o, pien View et rietriie shown in Figure 2, with the ediition of entre eoupiling iinirs in time puit rod or tine, prorideoi tor the purpose ot? oceonepiiening time eeeonei epeeitie otojeet eioove outiineo, nomety, to en*n obte proper tekoop oi? tire ponti tine dine to reenitunt stoet: therein tire repetir ot? inroiren ports.

'Figure 8 is o sertionui rieur oiiorvino tine reiution in which the irnrgroreri eouptingiinire or eonneetions ere eseoeruteri rvr/itin enen other und with e puit tine or power line f iliigggure 9 is e eeetionni View tenen entretenu tiariiy on the tine tt-9 oit Si Figure t@ ie u rierr, y' in eeetiorn eine .ring tire reir-,tion in w'trieii .extra coupling link is added tothe pull line for the purpose of permitting the pumping string-to bump the standing valve in a well, for the purpose of repairing some inoperative condition of the standing valve, in 'order that a pumping of oil from the well may be successfully. continued.

Figure 11 is a' rather showing the relation of the effective lengths of coupling links for the pull line or rod to be hereinafter described.-

Figure 12 is a front elevation, partly in section, showing the construction of a novel Itype of hookor detent member for the detent construction. V f

In the drawings, wherein for the purpose of illustration are shown preferred and other features of the invention, the letter A may l generally designate an oil well, wherein a reciprocatory pumping stringB is operable;

having operative connection at its upper endv with a pum ing jack C of `usual construction, with W ich a pull rod or line D is associated. The invention is mainly concerned with the pull rod, which for purposes of this invention, may include a section 15 operativel connected at 16 withthe connecting rod 17 o the pumping jack C, and also a section 20, leading to` the power line; details of the invention enerally designated at E in the drawings, ing associated between the pull rod or line sections 15 and 20.

As in ordinary construction the pumping string B includes the plunger 25 at`the lower end thereof having a traveling or working valve 27 connected therewith. -Anordinary standing valve 28 is disposed in the well tubing 30, for well known purposes.

The jack C is of usual construction, 1ncluding the frame 31 pivoted at 32 upon the stationary frame 33; the connecting rod 17 being ivoted onto the movable frame 31 remote rom the pivot 32, and having connection, as above mentioned, at 16, with the porj tion 15 of the pull rod or line. Referring to the invention E, it is preferred -to provide standards or posts 40 and 41 which reciprocably support a plunger rod 42 at their upper ends. The plunger rod 42 at one end is swivelly or pivotall-y connected with a hook-shaped connection 43, at 44; the hook end 45-of the connection 43 being' adapted for releasable connection'to an eye'or hook end 45a of the pull rod section 2O above described, as has been shown in Figure 1 of the drawings. -The hook 43 is so positioned that ifythere is any tendency or slack movement of the adjacent ends of the plunger rod 42 and pull rod section 20, the hook willautomatically release its connection with the pull rod 20 and drop to the position shown in Figure 6 of the drawings.

The plunger rod 42 extends in a bearing re-V lation thru the upper end of the post or standard 40, and it is adapted for releasable condiagrammatic view nection with the pull rod section 15 by means of a plurality of coupling ttings, the principal one of which 1s an enlarged head or member designated at 50, which is elongated, at one end 5l beingcylindrical shaped and providing a screw threaded socket 52 axially therein for detachable connection of the screw threaded end ofthe pull rod section 15, as shown at 53' in Figure 8 ofjthe drawings, or for detachably receiving the threaded end 54 of a special'coupling rod 55, which may vary in length. `The structure of the member is such that from a point intermediate its ends it tapers with a diminishing diameter toward the smaller end where a shoulder 58 is formed.

Intermediate its ends the body of the en-` larged member 50 is provided with a radiallyv 'i beinglof. such depth that the connecting rod 55 or .the plunger rod 42 may come to rest axially in the body 50, as shown in Figure 8;

`the socket 67 being counterbored in the body beyond the entrance slot 60 to permit the head 61 or 62, as the case may be, to slip therein and prevent an accidental disconnection of the rod thus assembled upon the coupling member 50. Thus, it is quite apparent that the member 50 is coupled in the pull rod length, having screw threaded connection at 53 with the pull rod section 15, and having detachable connection with either the end of the plunger rod 42, or oneof the special rod lengths 55, which may be connected by another of the members 50 with the plunger rod 42. It is shown in the drawings that the surface 57 facing in the direction of the pumping jack is disposed in a plane normal to the axls of the pull rod, for cooperative connection thereagainst with a detent head or so-called safety hook-oli 70, which is part of a detent construction to be subsequently described.

The detent member 70 comprisesan .elongated body which is substantially crescent- 70 is provided with a rear facing shoulder or* surface 74 in a plane normal to the length of the body 70. The channel 71 as above mentioned, tapers gradually from its fore end to its rear end and it is provided with a reduced way 77, shown in Figure 12, of a size which By reason of breakage of the pull rod or line, the power line is sometimes disconnected, and the parts above described release their connection. Due to the nature and length of the pull line section, in some instances, the weight is such that it can not be stretched taut at a single operation, so that the. take-up of slack must be gradual, at successive strokes of the operating line. This take-up is `ordinarily 'accomplished by means of a relief link connection. In the present invention, however, I prefer to use special coupling links comprising special rods 5 5 above described, detachably threaded at their threaded ends, in the relation mentioned, with the coupling body 50. Any number of these special coupling links may be used, as found necessary to effect an initial connection of the plunger rod 12 therewith and with the pull rod section 15. Thus, as shown in Figure 7 two of the special coupling devices are associated between the pull rod section 15 and the plunger rod 42, as well as an ext-ra one of the head enlargements three of the latter being used altogether. The pull rod havin been properly coupled, upon the stroke o the power mechanism away from the pumping equi ment in the well, the member50 most remote om the well will ride .past the lowered detent 70 to the position shown in Figure 7 and upon continued movement of the power stroke in the direction awa `from the well the second of the coupling bo ies 50 will pass the lowered detent 70; it being understood that the stroke movement of thepull rod or line is greater than the effective length of one of the special coupling links comprising the body 50 and the rod 55, as shown in the lower l portion of Figure 11, to permit the passage of one of the link connections. Then, upon movement of the power stroke in the direction of the well, the detent will hold the coupling member 50 which has just passed the same, and permit the disconnection of the power line at the hook 43 above described, and the link including the rod 55 and the free head or body or member 50 connected therewith will -be disconnected from` that coupling member 50 which is held against the detent, and thus shortening the effective length of the pull rod. Upon the next power stroke in the direction'of thewell the plunger rod 42 is connected tothe member 50 held directly at `the detent and other coupling connections placed to permit a further operation of the pumping equipment for taking up slack in the pull line and removal of the desired number of special link couplings until the pull rod is substantially taut and of a length to deliver the proper` stroke to the well pumping line. Y A

Under normal operation of the pumping line, of course, the plunger cups at the bottom .of the sucker rod line 'do not 'liit thestanding valve. The parte of the standing valve ve often become clogged with sediment, an by slight jarring the standing valve may have the sediment removed so as to permit the lfurther functioning thereof. To permit the pumping equipment to thus jar the standing valve, it is proposed Aby me to use a special coupling length, comprising one of the heads 50 shown in the upper portion of Figure 11, with a special length of coupling rod 55* of the same construction as the rod' 55 above described; the effective length thereof being shorter than the eiective length of one of the .cou ling rods 55, but suicient to accomplish t e purpose described.

It is preferred that the vspecial hook and couplin parts of this invention be made of malleab e' iron. From the :foregoing it is apparent that an improved and safe coupling connection has been provided, for a safety hook-olf of the pumping equipment of part icular wells, which may be ex ditiously put into operation as desired. Th2 special coupling links and arts enable a safety pick-up arrangement. t is to lie/,noted that the coupling parts permit o an axial connection with each other, along t e line of pull.

scribed, without departing from the spirit oi -the invention or the scope of the claims..

I claim:

1. In a safety h -oi mechanism for well pumping and opera ing equi ment the combination of a static ary brac et, a lever pivotedon the bracket, a channel-shaped detent having a downwardly facing channel, means connecting the channel-shaped detent with the operating lever at an end from its pivot, means for holding the' lever at the opposite side of the pivot from the detent to support the detent into or out of opvforms of invention herein shown and de erating relation with a pull line and means' holding the detent against movement of said pull line.

2. In a safety hook-of mechanism for well` pumpingand operating equipment the commation of a stationa bracket, a lever pivoted on the bracket, a channel-sha detent having a downwardly 'facing c el, means connecting the channel-shapeddetent with the operating leverv at an end spaced from its pivot, means for holding the lever at the opposite side of the pivot from the detent to support the -detent into or outl of operating re ation with a pull line and means holding -the detent against movement of saidv pull line, the means connecting the detent l the operating lever comprising an expansible 3.*In. a well pumping apparatus, a p rodcomprising a plurality of sections, means detachably connecting said sections, said means comprising tapped slotted enlargements on said sections, each of said enlargespring normally contracted, l

` iso ments having an abrupt siloulciei7 and a link between each two of said sections, seid link heilig provided Wiih .5i head on one end and Screw threads oh the other, the seid head hitting in 'the slot on one of said emiargemehts und the "threaded end being scfe'vved into the tapped opening of the othei of said enlargements: means supporting said sections; and n safety hook device on `the support means, comprising a pivoted lever, a dleitenit suspended 'from said pivoted lever foi holding one of said sections when detached from the other of said sections, Seidl de'tent comprising a hiock having a, tu ered bore .mici en abrupt shoulder with Whieih one of said ehiai'gements is ada-pied to iiii'teioeh..

ROLAND PLUTTS, 

